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- phthalic anhydride pump 苯酐泵
- Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride. 用六氢化邻苯二酸酐加入到邻苯二酸酐中,可使其放热反应减慢。
- Process for synthesizing dimethyl phthalate(DMP) for phthalic anhydride and methanol has developed. 研究以苯酐、甲醇为原料合成邻苯二甲酸二甲酯的方法。
- EBE monitored control system is an assistant to operator of 2000 TPY phthalic anhydride plant. EBE监视系统是 2 0 0 0t/a苯酐装置操作人员的有力助手
- The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and butyl alcohol. 采用强酸性阳离子交换树脂催化邻苯二甲酸酐与正丁醇的酯化反应。
- Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23. 以氯苯和邻苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4%25。
- Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride in an overall yield of 23.4%. 以氯苯和邻苯二甲酸酐为起始原料，经四步工序合成马吲哚，总收率为23．4%25。
- A widely used durable synthetic resin derived from glycerol and phthalic anhydride. 醇酸树脂从丙三醇和酞酸酐中提炼出的一种应用范围很广的耐用合成树脂
- The flow sheet and operation in phthalic anhydride plant system after the adding partial condensator were introduced. 介绍了苯酐装置系统中增加部分冷凝器的流程,操作讨论了加部分凝冷器前后的经济效益。
- Cetyl phthalate was prepared from phthalic anhydride and cetyl alcohol as raw materials catalyzed by non-acid catalyst. 以苯酐与十六醇为原料,选用非酸催化剂,在实验室合成了增塑剂邻苯二甲酸双十六烷基酯。
- Alkyd resins were prepared from maleopimaric acid(MPA)which consists of maleic and rosin instead of phthalic anhydride. 采用松香和顺酐反应合成的马来海松酸(MPA)代替苯酐制备醇酸树脂涂料。
- Objective: To study the effects of Phthalic Anhydride on the worker's health Methods: Present survey. 目的：研究邻苯二甲酸酐对工人健康的影响。方法：现况调查。
- Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol,from which certain synthetic dyes are derived. 酞一组化合物之一，由邻苯二甲酸酐和酚反应而成，某些合成染料是由此提取的
- Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol, from which certain synthetic dyes are derived. 酞一组化合物之一，由邻苯二甲酸酐和酚反应而成，某些合成染料是由此提取的
- Carboxylic crosslinked polystyrene(PS-COOH) microsphere has been prepared by Friedel-Crafts acylation with phthalic anhydride. 选用邻苯二甲酸酐以傅克酰基化反应制备了聚苯乙烯(PS)羧基化弱酸性离子交换树脂。
- Place 49 g of phthalic anhydride in an amber bottle and dissolve it in 300 ml of pyridine that has been freshly distilled over phthalic anhydride. 将49克邻苯二甲酸酐放入琥珀瓶里，倒入300毫升的嘧啶(在刚才准备邻苯二甲酸酐的过程中蒸馏好的)稀释。
- The title poly(ester-amide) hyprebranched polymer is prepared based on phthalic anhydride and diisopropanol as starting materials. 以苯酐和含氮二元醇为原料,合成了聚(酯-酰胺)结构的超支化聚合物。
- Many methods for preparation of anthraquinone such as phthalic anhydride method, oxidation method and naphthaquinone method and so on were compared. 综述了重要中间体蒽醌的应用以及传统工业生产方法,评价了苯酐法、氧化法及萘醌法等各种方法的优缺点。
- A water dispersive alkyds resin was prepared by using fatty oil,phthalic anhydride,trimellitic anhydride and trimethylolpropane as major materials. 以脂肪油、邻苯二甲酸酐、偏苯三酸酐和三羟甲基丙烷为主要原料合成了水分散性醇酸树脂。
- The research, development situation and technology keys of the catalyst for preparing phthalic anhydride by oxidation of o -xylene were introduced. 介绍了邻二甲苯氧化法制苯酐用催化剂的研究情况、发展概况和开发过程中的技术关键。
